The deduction of cooling rate from a simple heat balance can only be possible when the process is isothermal and the specific heats of the liquid and the solid are same.(a) True(b) FalseI had been asked this question by my school teacher while I was bunking the class.I'd like to ask this question from Rate of Solidification topic in division Cooling and Solidification of Casting-Forming-Welding I

The deduction of cooling rate from a simple heat balance can only be p

1.	The deduction of cooling rate from a simple heat balance can only be possible when the process is isothermal and the specific heats of the liquid and the solid are same.(a) True(b) FalseI had been asked this question by my school teacher while I was bunking the class.I'd like to ask this question from Rate of Solidification topic in division Cooling and Solidification of Casting-Forming-Welding I
Answer» The correct choice is (a) True Easiest explanation: In the SOLIDIFICATION process, extraction of heat can be achieved by applying a suitable cooling to the molten metal in ORDER to create a heat flux. The cooling rate can be deduced from a SIMPLE heat BALANCE only if the process is isothermal (low cooling rate) and the specific heats of the liquid and the solid are the same.

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